James grime



'(No Model.) 7

J GRIME DYEING MACHINE. Patented Oct. 1, 1895.

,UNITED Sterne Parana @rr rcn.

JAMES GRIME, OF BUSBY, SCOTLAND,

DYEING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 547,347, dated October1, 1895.

Application filed February 19, 1895. Serial No.533,994=. (N0 model.)Patented in England June 20,1893, No. 12,076, and

March 21,1894,N0-5,870-

To all whom it may concern.-

Be it known that I, JAMES GRIME, a citizen of Great Britain, residing atRosebank Cottage, Busby, in the county of Lanark, Scotland, haveinvented certain new and useful Improved Apparatus for Indigo Dyeing,(for which I have received Letters Patent in Great Britain, No. 12,076,dated June 20, 1893, and No. 5,870, dated March 21, 1894,) of which thefollowing is a specification.

My invention relates to apparatus for indigo dyeing so arranged that thedye solution is freed from impurities and that the material which isbeing dyed is exposed for oxidation in its passage from each dye-vat tothe next. For this purpose I provide each dyevat with an agitator-pumpand settling-tank for stirring up, drawing off, and depositingimpurities, and between each dye-vat and the next I provide aslowly-traveling apron, on which the partly-dyed material is exposed inloose folds for oxidation.

Figure 1 of the accompanying drawings is a part longitudinal section andpart elevation of a couple of dye-vats and adjuncts according to myinvention, and Fig. 2 is a transverse section on the line X X of Fig. 1.

The dye-vat A is arranged in the usual way with upper and lower rollersimmersed in the dye-liquor, over and under which passes the fabric oryarn to be dyed. At the bottom of the vat I provide an agitator Bconsisting of arms which are caused to revolve, when required, bybevel-gear connecting them to the shaft 0, which works the feeding anddrawing rollers. Near the dye-vat I provide a settling-tank D at suchheight that the upper portion of its liquid contents is above the levelof the dye-liquor in the vat A. A rotary or other pump E has itssuction-pipe F extended down nearly-to the bottom of the vat A, and itsdelivery-pipe F turned down into the settling-tank D, from which a pipeG, provided with a stop cook or valve, leads into the vat A. On a stagebetween the vat A and the next vat in order A I mount a pair ofslowlyrevolving rollers carrying an endless apron H.

The apparatus operates as follows: The indigo and reducing agentsusually employed are placed in the vat A, and the fabric or yarn L ispassed through the liquor in the usual Way, beingled up to theguide-roller R, thence down to the apron H, on which, as it is slowlytraveling in the direction of the arrow, the

fabric or yarn becomes deposited in loose folds or loops L. From theapron H the fabric or yarn is carried over the guide-rollers R anddescends to the feed-rollers of the next vat A, which is provided withan agitator-pump and settling-tank like those provided for A. In passingup and down from the guide-rollers R R and in moving in loose folds withthe apron II a large surface of the fabric or yarn L is exposed for aconsiderable time to the oxidizing action of the atmosphere as it passesfrom one vat in a partly-dyed condition to the next vat in order. Atcertain intervals of time, such as once in twenty-four hours, I causethe agitator B of each vat to revolve for some time, such as fifteenminutes. When the contents of the dye-vat have settled-as, for instance,after the nights quiescenceI work the pump E, so as to draw from thebottom of the vat the muddy liquor and deliver it into the tank D, fromwhich, after settlement, the clear liquor is returned into the dye-vat.From time to time, say at intervals of a month, the deposited impuritiesare withdrawn from the tank D and may be treated for recovery'of dye inadmixture with them.

Having thus described the nature of my said'invention and in what mannerthe same is to be performed, I claim 1. Indigo dyeing apparatusconsisting of two or more dye-vats, each provided with an agitator, pumpand settling vat, and each pair having between them a slowly travelingapron, substantially as and for the purpose with two or more pairs ofdye vats, of a rotary agitator arranged in the lower portion of travelat less speed than the fabric carrying means, as and for the pnrposesetforth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnessess, this 4th day of February, A. D.1895.

JAMES GRIME.

Witnesses: JOHN BRYCE CLARK, J r., ROBERT DONALD FERGUSON.

